widget/ScrollbarDrawingGTK.h

   1 /* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef mozilla_widget_ScrollbarDrawingGTK_h
   7 #define mozilla_widget_ScrollbarDrawingGTK_h
   8
   9 #include "nsITheme.h"
  10 #include "nsNativeTheme.h"
  11 #include "ScrollbarDrawing.h"
  12
  13 namespace mozilla::widget {
  14
  15 class ScrollbarDrawingGTK final : public ScrollbarDrawing {
  16  public:
  17   ScrollbarDrawingGTK() : ScrollbarDrawing(Kind::Gtk) {}
  18   virtual ~ScrollbarDrawingGTK() = default;
  19
  20   LayoutDeviceIntSize GetMinimumWidgetSize(nsPresContext*,
  21                                            StyleAppearance aAppearance,
  22                                            nsIFrame* aFrame) override;
  23
  24   Maybe<nsITheme::Transparency> GetScrollbarPartTransparency(
  25       nsIFrame* aFrame, StyleAppearance aAppearance) override;
  26
  27   template <typename PaintBackendData>
  28   bool DoPaintScrollbarThumb(PaintBackendData&, const LayoutDeviceRect&,
  29                              bool aHorizontal, nsIFrame*, const ComputedStyle&,
  30                              const EventStates& aElementState,
  31                              const EventStates& aDocumentState, const Colors&,
  32                              const DPIRatio&);
  33   bool PaintScrollbarThumb(DrawTarget&, const LayoutDeviceRect&,
  34                            bool aHorizontal, nsIFrame*,
  35                            const ComputedStyle& aStyle,
  36                            const EventStates& aElementState,
  37                            const EventStates& aDocumentState, const Colors&,
  38                            const DPIRatio&) override;
  39   bool PaintScrollbarThumb(WebRenderBackendData&, const LayoutDeviceRect&,
  40                            bool aHorizontal, nsIFrame*,
  41                            const ComputedStyle& aStyle,
  42                            const EventStates& aElementState,
  43                            const EventStates& aDocumentState, const Colors&,
  44                            const DPIRatio&) override;
  45
  46   void RecomputeScrollbarParams() override;
  47
  48   bool ShouldDrawScrollbarButtons() override;
  49 };
  50
  51 }  // namespace mozilla::widget
  52
  53 #endif